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5 register operation, Rd (register display) – Epson S5U1C62000A User Manual

Page 179

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S5U1C62000A MANUAL

EPSON

167

(S1C60/62 FAMILY ASSEMBLER PACKAGE)

CHAPTER 9: DEBUGGER

9.9.5 Register Operation

rd

(register display)

Function

This command displays the contents of the registers, current and next operation code and correspond-
ing mnemonic.

Format

>rd

(direct input mode)

Display

(1) Contents of display

The following lists the contents displayed by this command.
PC:

Program counter

A:

A register

B:

B register

X:

X register

Y:

Y register

SP:

Stack pointer

IDZC:

Flags

Current Code: Currently fetched program code at address indicated by PC

and corresponding mnemonic

Next Code:

Next code and corresponding mnemonic

(2) When [Register] window is opened

When the [Register] window is opened, all the above contents are displayed in the [Register] window
according to the program execution. When you use the rd command, the displayed contents of the
[Register] window is updated.

(3) When [Register] window is closed

Data is displayed in the [Command] window in the following manner:

>rd

PC:0206 A:0 B:f SP:7d X:003 Y:0ff IDZC:0010
Current Code:e00 LD A, 0x0 Next Code:e80 LD XP, A
>

(4) During log output

If a command execution result is being output to a log file by the log command, the register values are
displayed in the [Command] window even if the [Register] window is opened and are also output to
the log file.

GUI utility

[View | Register] menu item

When this menu item is selected, the [Register] window opens or becomes active and displays the
current register contents.